Please clarify if we can create releases for a Blanket PO in iProcurement. If it is possible, one my customer has created a Blanket PO and it is with approved status, but not able to find the Blanket PO in iProcurement search window for creating the releases.
If it is not possible to create releases from iProcurement, please suggest the procedure to create the releases. And also please let me know when can we query the blanket PO to find in iProcurement?

Is your Blanket Agreement approved and its terms dates current? If the BPA has expired or future dated, it will not show up in the item details on the search in iProcurement. It is very much possible to generate not only releases, but also carry them all the way to their approval. You need to define a BPA. Then create an Approved Supplier List, Sourcing Rules and Assign them to the default assignment set.

Subsequently when the user selects an item referencing that BPA in the iProcurment and creates a requisition, the release will automatically get generated if you define the Release Method on the ASL to 'Automatic Release'. The only condition is that the Buyer on the BPA needs to have sufficient approval authority to approve the release generate out of the requisition.